Siemens SIMOTICS HV M, Operating Instructions Manual

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relubrication. This is indicated by the fact that during relubrication, oil or grease escapes at the
bearing cover.
● To remove the spent grease, loosen the outer bearing cap.
NOTICE
Removing spent grease
If the spent grease is not removed, then the roller bearings become too hot and can seize
up as the grease distribution mechanism is disturbed.
WARNING
Working on the locating bearing
If the motor is in a vertical position, the rotor can fall out while work is being performed on
the locating bearing. This can result in death, serious injury or material damage.
Support or reduce the load on the rotor when carrying out work with the machine in a
vertical position.
9.1.9 Cleaning cooling air ducts and passages
The cooling ducts must be free of any pollution in order that the machine is adequately cooled.
● Regularly clean the grids, ducts, ribs, pipes etc. to remove dust and pollution.
9.1.10 Cleaning the air-to-water heat exchanger
● Clean the air-to-water heat exchanger in accordance with the operating instructions of the
heat exchanger manufacturer. These instructions specify the conditions to be complied with
and describe the available cleaning methods.
Instructions of the heat exchanger manufacturer (Page 129)
9.1.11 Servicing the external fan
WARNING
Injury caused by rotating parts or live (under voltage) parts
Live electrical parts are dangerous. Contact with them can cause death, serious injury or
material damage.
● Before carrying out any maintenance work on the external fan, disconnect it from the
mains, particularly before opening the terminal box.
● Make sure that the device cannot be switched back on.
Maintenance
9.1 Inspection and maintenance
SIMOTICS HV M 1RN76308PR900CG0-Z
Operating Instructions 07/2018
95